Hey guys! I'm new to all this and like many I'm trying to make a Twitterbot in Python.Now I've found a tutorial which posts line by line from a .txt file; which worked perfectly. But now I'm trying to combine two random strings and I can't find the proper solution.

In your example, str_a isn't a string per se, it's a list of strings or in this case a list of characters. So, when you ask how to combine str_a with str_b, it appears you're asking about combining 2 lists, and one presumes that would be into a 3rd list comprising the characters of the first two.